vendor-install: Add portable-ruby for aarch64 (ARM64)
vendor-install: Add portable-ruby for aarch64 (ARM64)

vitorgalvao/brew,EricFromCanada/brew,reitermarkus/brew,claui/brew,nandub/brew,MikeMcQuaid/brew,sjackman/homebrew,reitermarkus/brew,MikeMcQuaid/brew,vitorgalvao/brew,JCount/brew,konqui/brew,Homebrew/brew,konqui/brew,Homebrew/brew,sjackman/homebrew,reitermarkus/brew,konqui/brew,vitorgalvao/brew,mahori/brew,MikeMcQuaid/brew,claui/brew,claui/brew,nandub/brew,nandub/brew,sjackman/homebrew,mahori/brew,mahori/brew,claui/brew,JCount/brew,vitorgalvao/brew,nandub/brew,MikeMcQuaid/brew,EricFromCanada/brew,konqui/brew,Homebrew/brew,reitermarkus/brew,Homebrew/brew,EricFromCanada/brew,JCount/brew,EricFromCanada/brew,mahori/brew,sjackman/homebrew,JCount/brew